jetting ? for you xr guys.....

5 replies to this topic
  • clearedforlanding

Posted June 06, 2005 - 11:30 AM


i am shooting this question for my brother. he is having a bad stumble right off idle. i told him it was a jetting issue, just thought i would ask what you guys are running. his bike is all stock except he has the plug out of the exhaust. jetting is stock, what should he change on the jetting?

  • TimBrp

Posted June 06, 2005 - 12:03 PM


What kind of bike? All xr's have an off idle stumble unfortunately. Also all BRP riders reserve the right to request pics of your lady prior to any questions being answered...LMAO! Just kiddin'... :)

  • clearedforlanding

Posted June 06, 2005 - 06:55 PM


it is an xr600, i think late 90's. any ideas on jetting or cheap ideas for power. haha, there are all kinds of pics of my hottie on the babes thread.

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  • BrettJ

Posted June 06, 2005 - 11:57 PM


I'm a 650 man so I can't give you exact needle positions or main jet sizes but here's my advice...
Lower needle (1 clip pos maybe) this will give the bike more fuel at low throttle opening
If this doenst help try bigger main jet (2sizes maybe), then check pilot screw is at standard position. What I just told you to do fixed that problem on my 650. (except I didn't need a bigger main jet)

  • bork

Posted June 07, 2005 - 04:13 AM


I got a Edelbrok Quicksilver pumper carb for mine .94 xr600. The stumble may make you tumble when trying to raise wheel right before jumping a big log . I'm not good at endo's .

  • zackm58941

Posted June 07, 2005 - 05:49 AM


This might help you pinpoint which circuit is causing the problem, seeing there are no other problems with the bike.
Posted Image

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